Electric automatic valve



Patented Sept. 26, 1933 UNITED STATES PATENT OFFICE ELECTRIC AUTOMATIC VALVE Ellery E. Harrer, Troy, Pa. Application May 24, 1932. Serial No. 613,285

1 Claim.

This invention relates to an electric automatic valve, the general object of the invention being to provide a cylinder having a piston therein, the piston being connected to the valve, with means for introducing fluid into the cylinder to close'the valve against the action of a spring, and an electric control valve for controlling an outlet port for the fluid.

The valve may be used for an automatic start.

be a verylittle water running through the cylinder while the valve is open and motor operating.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claim,

In describing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a sectional view showing the invention applied to a gate valve.

Fig. 2 is a sectional view taken at right angles to Fig. 1 and also shows a diagrammatic valve view of the circuit.

In these views, the letter A indicates the housing of the valve B and the numeral 1 indicates a stem connected to the valve and extending through the bottom of a cylinder 2 the lower end of which is attached to the upper end of the housing A. The piston 3 is located in thecylinder 2 and is connected to the upper end of the stem and a tension spring 4 encircles the stem,

or rod 1 and has one end connected to the bottom of the cylinder 2 and its other end to the lower part of the stem or rod, so that this spring acts to hold the valve in raised position.

A fluid pipe 5 is connected to the upper end of the cylinder and to a supply of fluid for introducing the fluid into the cylinder 2, so that this fluid will act against the piston 3 to lower the valve B and an exhaust pipe 6 is connected through a port 7 with the upper part of the cylinder 2. This port is controlled by a; valve 8 which is held in open position by a spring 9.

The outer end of the valve 8 passes through a magnet 10 which is located adjacent a coil 11 on the member 12 and the magnet and coil are connected to the live wires 13 by the conductors 14 which contain the resistance 15.

As shown when the current is flowing to the parts, the valve 8 is held in closed position 'due to the repulsive action between magnet 10 and coil 11 but as soon as the current fails the spring 9 will open the valve so that the water or other fluid can be forced from the cylinder 2 by the piston 3 under the action of the spring 4 which raises the valve B. When the current comes back in the main line, the valve 8 will be closed so that the cylinder will again be filled with liquid and thus the valve B will be closed.

A lubricant cup 16 isconnected by a pipe 17 to the lower part of the cylinder so as to lubricate .the piston and its ring.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts provided that such changes all within the scope of the appended claim.

Having thus described my invention, what I claim as new is:

In combination with a valve and its casing, a cylinder supported from the casing, a pistonin said cylinder, a stem connecting the piston directly with the valve, a spring encircling the stem and having one end connected therewith and its other end connected to the bottom of the cylinder for normally holding the valve in open position, the outer end of the cylinder having a discharge port therein, a second valve for controlling said port, spring means for normally holding said second valve in open position, a pair ,of magnets producing a repulsive action for holding the second valve in closed position when such magnets are energized, whereby the spring will open the second valve when current to the magnets fails and a supply pipe for introducing fluid to the outer part or the cylinder for moving the piston to a position to close the first valve.

ELLERY E. HARRER. 

